Saline-alkaline land improvement fertilizer containing fishskin polypeptide and preparation method thereof

Abstract

The invention provides a saline-alkaline land improvement fertilizer containing fishskin polypeptide. The fertilizer comprises the following raw materials: potassium fulvate, fermented brewer's grains, peat, cinnamic acid, fishskin polypeptide, humus, 2-camphene, butylated urea formaldehyde resin powder, Alternanthera philoxeroides plant, diatomite, Siraitia grosvenorii sugar, pseudomonas fluorescens, and Halomonas halophiles. The invention also provides a preparation method of the fertilizer. The saline-alkaline land improvement fertilizer prepared according to the invention has an effective living bacteria number of 0.7-0.73billion cfu / g, a total nitrogen content of 4.0-4.2wt%, a total phosphorus content of 2.2-2.4wt%, a total potassium content of 3.5-3.9wt%, an organic matter content (on a dry basis) of 48.2-48.7wt%, a water content of 20.4-20.6wt%, and pH of 5.54-5.63, and a particle size (1-3mm) up to 98.7-98.9%.

Description

technical field [0001] The invention relates to a saline-alkali soil improvement fertilizer containing fish skin polypeptide and a preparation method thereof, belonging to the technical field of saline-alkali soil improvement fertilizer. Background technique [0002] All kinds of saline-alkali soils are formed under certain natural conditions. The essence of their formation is mainly the redistribution of various soluble salts in the horizontal and vertical directions on the ground, so that the salt gradually accumulates on the soil surface in the salt-gathering area. Accumulated, the fundamental reason for the formation of saline-alkali soil is poor water status, so in the early stage of improvement, the focus should be on improving the water status of the soil. Generally, it is carried out in several steps. First, drain and wash salt to reduce the salinity content of the soil; then plant salt-resistant plants to fertilize the soil; finally plant crops. The specific improv...

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Problems solved by technology

[0005] (1) There are phenomena such as low content of effective bacteria and excessive bacteria, and some manufacturers add inappropriate amount of chemical fertilizers or other additives to biological fertilizers, so that the nitrogen, phosphorus, and potassium content of fertilizers in fertilizers are too high, resulting in the death of effective bacteria, while lose the effect of biological fertilizer;

[0006] (2) The effect of improving saline-alkali land is poor, and it cannot effectively reduce the pH value of the soil, reduce the alkalinity of the soil, reduce the salinity of the soil, increase the organic matter content in the soil, increase the water holding capacity of the soil, and increase the 5-7mm in the soil. Excellent water stability, aggregate mechanical stability, improve soil water retention capacity; increase the content of nitrogen, phosphorus and potassium in the soil, and reduce the content of cadmium in the soil;

[0007] (3) For potato planting in saline-alkali land, the survival rate of potatoes is low, and the yield of potatoes per mu is low;

[0008] (4) It is used for potato planting in saline-alkali soil, and has no control effect on weeds in potato fields;

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